Rotary engine.



J. M. MARTIN.

ROTARY ENGINE.

APPLICATION FILED JULY 22. I916.

msmm, v Patented July 3,1917.

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JERRY M. MARTIN, or BIQTRKEVILLE, TEXAS, ASSIGNOR or ONE-HALF To some. i.

HANCOCK.

ROTARY ENGINE.

Specification of Letters Patent. Patented uly 3, 191W Application filed my 22, 1916. Serial No. 110,798.

. a citizen of the United States, residing at Burkeville, in the county of Newton and State of Texas, have invented anew and useful Rotar Engine, of which thefollowing is a speci cation.

The present invention relates to rotary engines utilizing steam, compressed air or other pressurefluid as motive power, and it is the object of the invention to provide a rotary engine embodying a novel construction and assemblage of the component elements, and embodying novel means for revcrsing the engine.

The invention is illustrated in the accom panying drawing, wherein c Figure l is a vertical median section of the engine, portions being shown. in elevation'. i

Fig. 2 is a diametrical section taken on the line 22 of Fig. 1.

The engine embodies a substantially cylindrical casing or stator 1 having its axis horizontal, and within which a rotor 2 of circular outline is rotatable. The casing has a removable side plate, and the rotor has its faces working snugly against the side plates of the casing, the rotor comprising side plates or sections secured together in any suitable manner. T he'casing 1 has an upper arcuate wall 3 snugly fitting the upper half of the periphery of the rotor, and the casing is provided with a lower arcuate wall i having a larger radius than the wall 3 and providing an arcuate chamber between the lower half of the periphery of the rotor and the wall 4. Reversely inclined cams 5 are provided between the adjacent ends of the walls 3 and 4. The periphery of the rotor is provided with four equally spaced diametrically opposite radial pockets 6 in which piston blades 7 are slidable radially, the side edges of the pistons working against the'side plates of the casing. ,Each pair of diametrically opposite plstons is connected by a diametrical fiat stem 8, and where the stemscross one another, they are recessed, as at 9, so that they can reciprocate relatively, toone another without interier-v ence. Attached to the side sections of the rotor centrally thereof is aair of oppositely extending shafts 10 w ich are journaled through the side plates of the casing,

' said side plates having stuffing boxes 11 for preventing leakage."

As means for preventing leakage between the side plates of the casing and the side faces of the rotor, the side plates of the casing arejpr'ovided upon their adjacent surfaces with annular grooves 12 in which packing rings 13 are housed. The side plates of the casing have bores or apertures 14 extending outwardly from the grooves 12 and into which screws 15' are threaded. Coiled .wire expansion splin s 16 are confined between the screws 15 and packing rings 7 12, whereby to press the packing rings against the faces-or sides of the rotor near the periphery thereof. The piston blades 7 work between the'opposit'e rings 12.

The pressure fluid is admitted and discharged at the op 'osite ends of the arcuate chamber between t e rotor and lower portion of the casing, and for this purpose, the u per portion of the casin has passages 1? leading upwardly from t e cams 5 and converging toward one another, said pas sages 17 having the branch passages 18 and 19 extending upwardly. Branch pipes 20 are connected to the upper portion of the casing 1 in communication with the passages .18 and are connected to the main pipe 21, while' a pipe 22 is connected to the upper portion of the casing in communication with the two passages l9which oonver e and meet wher the pipe 22 is connecte One of the pipes 21-22 supplies the pressure fluid, while the other communicates with the atmosphere for the exhaust of the spent pressure fluid.

As a means for controlling the flow of pressure fluid and reversing the engine, the

upper portion of the casing 1 has a horizontal I and is connected to the stem 25 for sliding the valve 24 conveniently. The valve 2 1 has ports 28 to register alternately with the passages 18, and ports 29 to register alter nately with passages 19. Thus, when the valve 24 is slid to the left, as seen in Fig. 1,

the left hand port 28 registers with the left hand passage 18 thereby bringing the left hand passage 18 into communication with" the pipe 21, while the right hand port 29 registers with the right hand passage 19 and establishes communication between the right hand passage 17 and the pipe 22. In moving the valve 24 to the right, the connection of the passages 17 with the pipes 21 and 22 is reversed to reverse the engine, as will be apparent.

In operation, when the pressure fluid is admitted into one end of the pressure fluid chamber from the respective cam 5, it will impinge against one blade 7 and force it toward the opposite end of the chamber, thereby actuating the rotor. As each blade 7 moves from the wall 4 onto one. of the cams 5, it is forced into the respective pocket 6 by the cam action, thereby projecting the opposite piston blade across the end of the passage 17 from which the pressure fluid flows when the rotor is removed, and the sections thereof separated, the piston blades and their stems can be readily removed for purpose of repair, cleaning or replacement.

within the casing having its periphery fitting one of said walls, said rotor embodying detachable side sections, the periphery of the rotor having diametrically opposite radial pockets, piston blades working within said pockets, and along said walls and cams, crossed stems disposed between the sections of the rotor and connecting the diametrically opposite pistons, ,the casing having side plates provided with annular grooves, packing rings fitted within said grooves to bear against the opposite sides of the rotor near the periphery thereof, said side plates having apertures extending outwardly from the grooves, screws threaded within said apertures, expansion springs confined between said rings and screws, shafts attached to the side sections of the rotor and journaled through the side lates of the casing, and

- means for reversing the flow of pressure fluid into and out of said passages.

, JERRY M. MARTIN. 

